Fix MIPS build broken by r12735 'Allow unaligned accesses for ARMv7'.

R=mstarzinger@chromium.org,palfia@homejinni.com

Review URL: https://chromiumcodereview.appspot.com/11167004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12739 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/mips/regexp-macro-assembler-mips.cc

@@ -1103,6 +1103,11 @@ void RegExpMacroAssemblerMIPS::WriteStackPointerToRegister(int reg) {
 }
 
 
+bool RegExpMacroAssemblerMIPS::CanReadUnaligned() {
+  return false;
+}
+
+
 // Private methods:
 
 void RegExpMacroAssemblerMIPS::CallCheckStackGuardState(Register scratch) {

src/mips/regexp-macro-assembler-mips.h

@@ -112,6 +112,7 @@ class RegExpMacroAssemblerMIPS: public NativeRegExpMacroAssembler {
   virtual void WriteCurrentPositionToRegister(int reg, int cp_offset);
   virtual void ClearRegisters(int reg_from, int reg_to);
   virtual void WriteStackPointerToRegister(int reg);
+  virtual bool CanReadUnaligned();
 
   // Called from RegExp if the stack-guard is triggered.
   // If the code object is relocated, the return address is fixed before